Function emit_line

src/foundation/log.c:235–254

}

static void emit_line(const char *line) {
    /* Load ONCE: re-reading the global between the test and the call would
     * let a concurrent cbm_log_set_sink turn a checked pointer into a NULL
     * call. */
    cbm_log_sink_fn sink = atomic_load_explicit(&g_log_sink, memory_order_relaxed);
    if (sink) {
        sink(line);
        if (atomic_load_explicit(&g_log_sink_mode, memory_order_relaxed) == CBM_LOG_SINK_REPLACE) {
            return;
        }
    }
    (void)fprintf(stderr, "%s\n", line);
    if (atomic_load_explicit(&g_log_crash_durable, memory_order_relaxed)) {
        /* The line is complete here and the stream lock is released, so a
         * process that dies on the very next instruction still leaves this
         * line on disk. Free when stderr is unbuffered; one write() per line
         * when setvbuf was refused. */
        (void)fflush(stderr);
    }
}

void cbm_log(CBMLogLevel level, const char *msg, ...) {
    if (level < atomic_load_explicit(&g_log_level, memory_order_relaxed)) {